#! /usr/bin/python
# Filename: usng_dict.py

ab = {'Swaroop':'swaroopch@byteofpython.info',
        'Larry':'larry@wall.org',
        'Matsumoto':'matz@ruby-lang.org',
        'Spammer':'spammer@hotmail.com'
        };

print "Swaroop's address is %s" % ab['Swaroop'];
ab['Guido'] = 'guido@python.org';

if 'Spammer' in ab:
    del ab['Spammer'];

print '\nThere are %d contacts in the address-book\n' % len(ab);

for name, address in ab.items():
    print 'Contact %s at %s' % (name, address);

if ab.has_key('Guido'):
    print "\nGuido's address is %s" % ab['Guido'];

